confirmed the identity of benzylic acid with two OH peaks and the carbonyl peak. Introduction The purpose of this experiment was to synthesize benzilic acid from benzoin. Part A was omitted from the experiment and benzoin became the starting reagent. For this experiment a multistep synthesis was required. In the first part (Part B) benzoin was oxidized using nitric acid to make benzyl as a product. This reaction is characterized by the orange gas of nitrogen oxide that is liberated as a byproduct
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enthalpy‚ heat of reaction‚ and the heat of the calorimeter is: Ccal=qcal∆T qrxn=nLR x ∆H The students are the ones responsible in preparing their own solution. Inside the test tube the students put the reagents used for calibration to determine the heat capacity of the calorimeter. These reagents are: sodium hydroxide and HCl. Then the students measure the temperature with 15 seconds intervals. The students made two trials and determine the change in temperature which is needed for the calculations
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Designation: D2972 – 08 Standard Test Methods for Arsenic in Water1 This standard is issued under the fixed designation D2972; the number immediately following the designation indicates the year of original adoption or‚ in the case of revision‚ the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval. 1. Scope 1.1 These test methods2 cover the photometric and atomic
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of Reagents: Compound (g) Molecular Weight (g/mol) Grams (g) Moles 6 mL of 2-methylcyclohexanol (C7H14O) 114.19 g/mol 6 mL x 0.943g = 5.66 g 1 mL 5.66 g x 1mol = .0496 mol 114.19 g 5 mL of 85% phosphoric acid (H3PO4) 98.0 g/mol 5 mL x 2.01 g = 10.05 g 1 mL 10.05 g x 1mol = .1026 mol 98.0 g Drying Agent Sodium Sulfate Na2SO4 142.04 g/mol Ice Water Bath (H2O) Boiling Stone The reagents are to be in a 1:1 molar ratio. The limiting reagent is 2-methylcyclohexanol
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equilibrium constant‚ Keq‚ of the Fe3+(aq)+SCN-(aq)↔ FeSCN2+(aq) reaction. By determining the amount of light absorbed‚ the concentration of the colored FeSCN2+ solution was also quantitatively determined. From that data‚ the concentrations of the reagents at equilibrium may also be determined. This experiment should thus provide a Keq value without computing for the concentration of each of the species in the reaction. This experiment will only deal with the aspect of chemical equilibrium‚ particularly
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7e- ^ the 13 on C is mass number. = # protons + # neutrons. 3. N2 + 2 O2 + Cl2 -> 2 NO2 Start with 6 mol N2‚ 4 mol O2‚ 4 mol Cl2‚ Find limiting reagent and amounts remaining of excess reactants N2 + 2 O2 + Cl 2 6 mol 4 mol 4 mol start Max yield x (2mol No‚Cl/ 1 mol N2) Of No2Cl = 12 mol 4 mol 8 mol O2 is the limiting reagent. 4 mol of NO2Cl (4 mol NO2Cl) (1 mol N2 / 2mol No2Cl) = 2 mol N2 consumed 6 mol N2 – 2 mol N2 = 4 mol N2 left ^at start ^ used up (4 mol NO2Cl) (1 mol
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0.7856 H2SO4 98.06 ~15drops N/A N/A N/A 327 1.84 Methanol 32.0 ~6mL N/A N/A N/A 64.7 0.7914 Water 18.0 5mL N/A N/A 0 100 1.0 1‚4-Di-t-butyl-2‚5-dimethoxybenzene 250.17 product product 1:1 102-105 N/A N/A Reaction and its Mechanism: The limiting reagent for this reaction is 1‚ 4 – dimethoxybenzene. See calculations section for explanation. Overall Reaction: C8H10O2+
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Cited: "Limiting and Excess Reagents - Practice Problems." Limiting and Excess Reagents - Practice Problems. N.p.‚ n.d. Web. 22 Apr. 2013.
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Structure Intro Who is Luke Lucas? Talk about him and his education‚ his work‚ his achievements. Talk about his most famous pieces of work Body The first section to my body of text I will be talking about what it really is luke lucas tries to achieve when creating his typography work. I’m also going to try and explain what it is that drew my attention to his work. For the second part of my body of text i will discuss what my favourite style is that he uses when creating his work
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flames‚ and sharp objects that can cause damage if used improperly. The following precautions should be taken to avoid the problems that could potentially occur. 1. Lab coats are required. Wearing old clothing is also desirable‚ since many reagents can produce permanent stains on clothes. 2. Students may not wear sandals or open toed or canvas shoes because of the constant danger of cuts and infections from broken glass found on the lab floors and the possibility of chemical spills. 3. Long
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